It's kinda rare to find some company that will pay in BTC, maybe in the future and if BTC became more consistent, more companies will try to do the same. IMO, you still need to convert it to fiat since you need spend it for daily needs but I think it's better if your commission or maybe partial of your salary is in BTC while the others are fiat. I think it's very efficient in that way, you're diverse already and nothing to worry about losing money, you're also financially secured since you have a global asset that has potential to grow for years. You don't have the pressure to when you'll sell or hodl since you're receiving it monthly, you just need to be wise for an efficient or profitable sell.
Companies are businesses must obey laws and regulations in their country and even regional or global regulations. Therefore, companies must feel safely enough to own bitcoins for their companies first as it is allowed legally in that nation. Next, they must see demand of their employees so that they can consider a salary payment policy change from fiat (cash), bank transfer to Bitcoin.
Things must come this way, gradually and legally, for having sustainable and acceptable policy in any company. If employees don't have demand of having bitcoins, it's hard for any company to force their employees to receive it.